I am a bit worried about a bony bump on my skull and I don't know what it is. The bump is located at the sagittal suture and it goes straight down to the anterior fontanelle. It makes a "T" almost if you feel the top of my head. The bump is a bit larger at the back, top of my head. The bumps is sort of like a seal where my skull plates meet. As a matter of fact, I believe that it is my skull because it is just as hard as the rest of my head. I have had it there for as long as I can remember. I would go as far as to say that it's always been there but I can't be completly sure. I was hit in the head with a basketball when I was a child in grade school. The force of the ball hitting my head was so great that my bottom tooth was chipped. I don't know if that might have something to do with it. I am 20 years old, male, and I do not experience any symptoms related to a brain disorder. I do have tinnusitus, but that is unrelated. Lately, I have had some headaches but I believe that they are just due to the fact that I get a bit nervous when I think about the bump on my head. Is it something to worry about or is it a normal skull variation? What could this be doctor? Thanks for reading this and taking the time to answer.

You may simply be feeling a normal ridge that can form at the suture line. This is a normal variation. I'm a little uncertain where your lump is, though, so I would recommend that you have your doctor take a look at this when you are in next just to be sure.